Patents by Inventor Allan Denholm

Allan Denholm has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Wellhead feed through apparatus for electrical cable and other types of conduit
    Patent number: 10934799
    Abstract: A wellhead valve assembly feedthrough for a cable or conduit comprises a lower connector disposed within the wellhead valve assembly and being coupled to an upper end of a cable or conduit disposed in a wellbore, and a moveable upper connector disposed above the lower connector, the upper connector extensible to connect to the lower connector and retractable to disconnect from the lower connector. The wellhead valve assembly feedthrough further includes a sealed exit arrangement having a segment of conduit or cable passing therethrough to outside the wellhead valve assembly, wherein one end of the segment of conduit of cable is connected to the upper connector.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: March 2, 2021
    Assignee: ZiLift Holdings, Limited
    Inventors: Iain Maclean, Allan Denholm
  • WELLHEAD FEED THROUGH APPARATUS FOR ELECTRICAL CABLE AND OTHER TYPES OF CONDUIT
    Publication number: 20190112888
    Abstract: A wellhead valve assembly feedthrough for a cable or conduit comprises a lower connector disposed within the wellhead valve assembly and being coupled to an upper end of a cable or conduit disposed in a wellbore, and a moveable upper connector disposed above the lower connector, the upper connector extensible to connect to the lower connector and retractable to disconnect from the lower connector. The wellhead valve assembly feedthrough further includes a sealed exit arrangement having a segment of conduit or cable passing therethrough to outside the wellhead valve assembly, wherein one end of the segment of conduit of cable is connected to the upper connector.
    Type: Application
    Filed: December 13, 2018
    Publication date: April 18, 2019
    Inventors: Iain Maclean, Allan Denholm